Automatic weighing-scale.



- No. 842,576. PATENTED JAN. 29, 1907.

N. NILSON. AUTOMATIC wmeame SCALE.

APPLIOATIOF FILED APR. 22, 1906.

HIS A TTORAIEIJ.

UNITED ST AI ES MLS NILSOX, OF WAYZATA, MINNESUll-X.

AUTOMATIC WElGHlNG-SCALE- No. seams.

Specification of Letters Patent.

Patented Jan. 29, 1907.

Application filed April 22,1905 Serial No. 256,889.

To alZ whom it may concern Be it known that I, NILs NILSON, oi VVavzata, Il ennepin county, Minnesota, have invented certain new and usetul Improvements in Automatic IYeighing-Scales, of which the following is a specification.

My invention relates to weighing-scales of the rocker type similar to those shown and described in Letters Patent of the United 'States No. 643,423 and No. 702,463, issued to me February 13, 1000, and June 17, 1902.

The object of my present invention is to provide means for economizing time and labor in the operation of bringing the scale to balance. n

The invention consists generally in means to enable the operator or person using the scale to determine at a glance the approximate proper position of the beam-weight without the necessity of moving the said weight batik and forth on the beam to balance the load on the scale-platform.

In the accompanying drawings, form ng part of thisspeeitication, Figure 1 is a front elevation, part ially in section, of an automatic weighing-seale oi" the rocker type with my invention applied thereto. Fig. 2 is a detail showing the device for securing the sliding weight on the beam.

in the drawings. 2 represents the base whereon the scale is mounted, and 3 and 4 standards provided on said base, the former supporting the dial 5 and the latter supporting knife-edge pivots 6 of the scale-beam 7. A rod 8 leads from the short arm of said beam down to the scale-platform in the usual way. The long arm of the beam is connected by a rod 9 with a rocker mechanism 10, that forms the subject-matter of a companion application for patent herewith,

filed May 9, 1905, Serial No. 259,542, and

need not be specifically described or illustrated herein. The dial 5 is graduated in the usual way, preferably 'up to two hundred pounds,

and an indicator 10 is mounted on said dial and arranged to move back and forth over the same, being act uated by a rack-bar 11, that has a pinion connection (not shown) with the post of said hand, as is shown in the companion application referred to. An adjusting device 9 is provided in the rod 9 to facilitate the adjustment of the indicatorhand at zero without the necessity of moving it from its'post, I. also-provide a weightsupport 9 on the rod 9 for carrying an auxiliary weight, the purpose of which is fully described in said companion application. An arm 12 is pivoted on the scalebeam, and is connected by a spring 13 with the bar 11, said spring serving to relieve the wear or shock on the hand resulting from the sudden arrest of its movement. A weight 14 is carried by the arm 12 to hold the bar 11 in engagement with the indicator-pinion. A stop-pin 15 arts as a guide for said bar and limits its movement away l'ronrthe pinion. A sliding weight 1.6 is arranged on the scalebeam and is provided above said beam with a housing 17 for a carriage 18, that is pivoted at 19 in said housing, and is provided with antil'riction-rollers 20, that are adapted to rest and travel upon the upper edge of said beam. One end of said housing is provided with an edge 21, adapted to enter notches 22,provided in the top of the scale-beam opposite the grad nations on the face thereof. A camlever 23 is also pivoted in the housing 1.7 and arranged to engage the carriage 1S and when depressed raise the said edge 21 out of the notch 22 to allowthe scale-weight to be moved back and forth on the beam. When the cam-lever is raised, the edge 21 will be allowed to drop into the notch in the beam and lock t be weight against accidental movement.

In a scale of this kind considerable time and energy are wasted in moving the scale-weight back and forth on the beam to balance the scale after the load has been placed on the platform. In weighing loads up to two hundred pounds the indicator-hand will point to the proper graduation and ndicate the correct weight of the load on the scale-platform without the use of any secondary or auxiliary indicating device. When, however, the limit of the indicating-dial has been passed, the operator will find it necessary to guess at the proper position of the scaleweight on the beam and move it first one way and then the other until the proper location has been determined; To obviate all this l difliculty and objection to the use of a weighl ing-scale as ordinarily constructed, I provide l a secondary indicating device consisting of a dial 24, arranged, preferably, on the base 2 beneath the scale-beam and provided with a beam 25, pivoted at 26 beneath the base 2 and having its lower arm connected with said base by a stiil' coil spring 27 and its short i arm provided with a rod 28, preferably ICC wo sections edjustebly connected nbuckle 29 andthe upper section t loop 30, inclosing o knife-edge 31 on scsle-becm proper. This loop is suffiyl i rge to be normally out of contact me knife-edge at all points, and when eel 1 used for weighing lozids less than i A to two hundred pounds the knife-edge will remain out of contact with. the loop, risan i felling therein with the movement of scale-beam, the u per section of the rod ing held in proper a ineinent by means of {L beveled edge disk 32, fitting betwen segments thetisire adjustable by means of setscrews 34. The long arm of the beam 25 is provid 'i with s rnclebsr 35, pivoted thereon 'ng s pinion 36 'on the post of an d 37, that is arranged to move over the dial 24, that is gredus to correspond to the graduations on the corn. The rack-bar 35 is held in conrts pinion by a spring 37.

" what the operator desired to weigh -o ieding two hundred pounds, the be Wieglied is placed on the scale end the beam will immediately be tising the knife-edge 31 against the ot the loop 30 and operziting the inst the tension of its spring 27 the indicator-hum] 37 to travel and pbint to a grad UiLlllOIl thereon p esent cpprmiimetely the weight 10 scale-platform. The spring as is Well known through scales, remain accurate at hing device for the rod-sections 25 keep them in proper position and ure the accurate engagement of the knife- 0 Luge S1 with its hearing at the upper end of the loop. be easily regulated by means of the turnbuckle-adjusting device 29.

I here shown and described my invention, which i may term a scale beam-weight finder, as no plied to scales of the rocker type, and perticu arly those of my own invention;

but it will be undcrstoed that the device'is'" equally well applicable to any type of scale us ng it scale-beam and a Slldlllg weight.

1 claim as my 1nvent1on 1. in scale the combination with a beam,

cretion of the smile is as follows:

The time of" such engagement can an indicator to show the weight of the load up in a predetermined point, of an auxiliary indicetorhavii'ig a part arranged to be tom pornrily engaged by :1 portion of the beam in the movement of said bezun to adapt said indice-tor to show the position at which the beam-Weight should be phi-cod to weigh in excess of said predetermined point and here the weight indicated upon the first-meritioned indicator, substantially {LS [l(%S(.1.i l) (i.

3. in :1 scale having it beznn, and n, movable Weight, two weight-indientors, one of said indicators being opera-lively connected With the beam to conct therewith and its movable Weight to indicate the weight up to & predetern'iined point, and the other indicator having a part thereof arranged to be rem pomrily connected with the beam in the movement of said beam to adapt said llillbactor to couct with the hczun to indicate 1hredjustnicnt to be made in the bcnumvcighl to weigh in excess oi said predetermined point, substantially as described.

The combination, with at \(?lj llll1-$0:tll herring scale-beam end nuivnhle weight thereon. and mechanism coimoctcd with said beam for counteibalencingthiload up to 21.- predetermined weight, of s graduated dial, no indicetonhend arranged to travel ()\21b.5!1l(l dial and connected with ssid srslc-beem to be actuated by the initial mow-uncut thm'o; it and indiceting; epproxinmtely the m -m, of the load on the scale up to said orcdctcrmined weight, and a secondary ii'nlicziling device inoperative during the initial movenwiil of said beam and becoming operative during it final movement and indireting ztl'lpl'nfiii mately the proper position oi the bemu- Weight to balance the loud on the scale when such load exceeds the weightreprosented by the graduations of said first-umned i1l(ll('ztt ing device.

1 5a The combination, with a weighing-scale provided with a scolc-bezini and movable Weight, of an auxiliary beiun, a spring connecting the long arm of said auxiliary beam with the iLxed suppiftj n'miins connected engaged by said scale-bemn during its final moi'enient only, a dial having grzulun-tions corresponding to those on sand scale-beam,

and an indicating-hand operatively connected with said auxiliary scale-beam and arranged to travel over the graduations of'said dial, substantially as described.

6. The combination, with a weighing-scale having a scale-beam provided with a knifeedge and a movable weight, of an auxiliary beam, a spring connecting the long arm of said auxiliary beam with the fixed support, an adjustable rod connected with the short arm of said auxiliary beam and having a loop at one end inclosing said knife-edge and normally out of contact therewith, the upper end of said loop having a bearing for said knife-edge and contacting therewith during the final movement of said scale-beam, a dial having graduations corresponding to the graduations on said scale-beam, and an indicating-hand operatively connected with said auxiliary scale-beam and arranged to travel over said dial and indicate approximately the weight of the load on the scale, for the purpose specified.

v 7. The combination with a scale provided with a beam and movableweighhof an auxiliary beam, means for oflering resistance to movement of the long arm of said auxiliary beam, means connected with the short arm of said auxiliary beam and located in the auxiliary beam path of said scale-beam, a graduated" dial, and an indicator operatively connected with 5 said auxiliary scale-beam and arranged to l travel over the graduations of said dial to in dicate the position at which the beam-weight l should be placed in the operation of weighing substantially as described.

v S. The combination with a weighing-scale having a beam and movable weight, of an having a counterbalancing device at one end, means connected with the other end of said auxiliary beam and air ranged to be operated by the movement of said scale-beam at a predetermined point, and a suitable indicator connected with said auxiliary beam and actuated from the weightbeam to indicate the position at which the weight should be placed on its beam in weighing beyond a predetermined point, for the purpose specified. 9. The combination with a scale provided with a beam and movable weight, of an auxiliary beam having a counterbalancing device at one and, means connected with the other end of said auxiliary beam and actuated by the iinal movement only of said scale-beam, and an indicating device operatively connected with said auxiliary beam to indicate the position at which the weight should be placed on'its beam to weigh beyond the point at which the giveight-beam acts on the auxiliary beam.

In witness whereof I ha e hereunto set my hand this 14th day of Ap'zrljlQOS.

NILS NILSUN Witnesses:

RICHARD PAUL, C. MACNAMARA; 

